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Rev | Author | Line No. | Line |
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420 | giacomo | 1 | /* |
2 | i801.c - Part of lm_sensors, Linux kernel modules for hardware |
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3 | monitoring |
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4 | Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>, |
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5 | Philip Edelbrock <phil@netroedge.com>, and Mark D. Studebaker |
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6 | <mdsxyz123@yahoo.com> |
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7 | |||
8 | This program is free software; you can redistribute it and/or modify |
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9 | it under the terms of the GNU General Public License as published by |
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10 | the Free Software Foundation; either version 2 of the License, or |
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11 | (at your option) any later version. |
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12 | |||
13 | This program is distributed in the hope that it will be useful, |
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14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | GNU General Public License for more details. |
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17 | |||
18 | You should have received a copy of the GNU General Public License |
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19 | along with this program; if not, write to the Free Software |
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20 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 | */ |
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22 | |||
23 | /* |
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24 | SUPPORTED DEVICES PCI ID |
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25 | 82801AA 2413 |
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26 | 82801AB 2423 |
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27 | 82801BA 2443 |
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28 | 82801CA/CAM 2483 |
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29 | 82801DB 24C3 (HW PEC supported, 32 byte buffer not supported) |
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30 | 82801EB 24D3 (HW PEC supported, 32 byte buffer not supported) |
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31 | |||
32 | This driver supports several versions of Intel's I/O Controller Hubs (ICH). |
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33 | For SMBus support, they are similar to the PIIX4 and are part |
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34 | of Intel's '810' and other chipsets. |
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35 | See the doc/busses/i2c-i801 file for details. |
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36 | I2C Block Read and Process Call are not supported. |
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37 | */ |
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38 | |||
39 | /* Note: we assume there can only be one I801, with one SMBus interface */ |
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40 | |||
41 | /* #define DEBUG 1 */ |
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42 | |||
43 | #include <linux/module.h> |
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44 | #include <linux/pci.h> |
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45 | #include <linux/kernel.h> |
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46 | #include <linux/stddef.h> |
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47 | #include <linux/sched.h> |
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48 | #include <linux/ioport.h> |
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49 | #include <linux/init.h> |
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50 | #include <linux/i2c.h> |
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51 | #include <asm/io.h> |
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52 | |||
53 | #ifdef I2C_FUNC_SMBUS_BLOCK_DATA_PEC |
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54 | #define HAVE_PEC |
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55 | #endif |
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56 | |||
57 | /* I801 SMBus address offsets */ |
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58 | #define SMBHSTSTS (0 + i801_smba) |
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59 | #define SMBHSTCNT (2 + i801_smba) |
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60 | #define SMBHSTCMD (3 + i801_smba) |
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61 | #define SMBHSTADD (4 + i801_smba) |
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62 | #define SMBHSTDAT0 (5 + i801_smba) |
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63 | #define SMBHSTDAT1 (6 + i801_smba) |
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64 | #define SMBBLKDAT (7 + i801_smba) |
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65 | #define SMBPEC (8 + i801_smba) /* ICH4 only */ |
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66 | #define SMBAUXSTS (12 + i801_smba) /* ICH4 only */ |
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67 | #define SMBAUXCTL (13 + i801_smba) /* ICH4 only */ |
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68 | |||
69 | /* PCI Address Constants */ |
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70 | #define SMBBA 0x020 |
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71 | #define SMBHSTCFG 0x040 |
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72 | #define SMBREV 0x008 |
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73 | |||
74 | /* Host configuration bits for SMBHSTCFG */ |
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75 | #define SMBHSTCFG_HST_EN 1 |
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76 | #define SMBHSTCFG_SMB_SMI_EN 2 |
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77 | #define SMBHSTCFG_I2C_EN 4 |
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78 | |||
79 | /* Other settings */ |
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80 | #define MAX_TIMEOUT 100 |
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81 | #define ENABLE_INT9 0 /* set to 0x01 to enable - untested */ |
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82 | |||
83 | /* I801 command constants */ |
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84 | #define I801_QUICK 0x00 |
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85 | #define I801_BYTE 0x04 |
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86 | #define I801_BYTE_DATA 0x08 |
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87 | #define I801_WORD_DATA 0x0C |
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88 | #define I801_PROC_CALL 0x10 /* later chips only, unimplemented */ |
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89 | #define I801_BLOCK_DATA 0x14 |
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90 | #define I801_I2C_BLOCK_DATA 0x18 /* unimplemented */ |
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91 | #define I801_BLOCK_LAST 0x34 |
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92 | #define I801_I2C_BLOCK_LAST 0x38 /* unimplemented */ |
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93 | #define I801_START 0x40 |
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94 | #define I801_PEC_EN 0x80 /* ICH4 only */ |
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95 | |||
96 | /* insmod parameters */ |
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97 | |||
98 | /* If force_addr is set to anything different from 0, we forcibly enable |
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99 | the I801 at the given address. VERY DANGEROUS! */ |
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100 | static int force_addr = 0; |
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101 | MODULE_PARM(force_addr, "i"); |
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102 | MODULE_PARM_DESC(force_addr, |
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103 | "Forcibly enable the I801 at the given address. " |
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104 | "EXTREMELY DANGEROUS!"); |
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105 | |||
106 | static int i801_transaction(void); |
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107 | static int i801_block_transaction(union i2c_smbus_data *data, |
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108 | char read_write, int command); |
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109 | |||
110 | static unsigned short i801_smba; |
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111 | static struct pci_dev *I801_dev; |
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112 | static int isich4; |
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113 | |||
114 | static int i801_setup(struct pci_dev *dev) |
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115 | { |
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116 | int error_return = 0; |
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117 | unsigned char temp; |
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118 | |||
119 | /* Note: we keep on searching until we have found 'function 3' */ |
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120 | if(PCI_FUNC(dev->devfn) != 3) |
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121 | return -ENODEV; |
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122 | |||
123 | I801_dev = dev; |
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124 | if ((dev->device == PCI_DEVICE_ID_INTEL_82801DB_3) || |
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125 | (dev->device == PCI_DEVICE_ID_INTEL_82801EB_3)) |
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126 | isich4 = 1; |
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127 | else |
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128 | isich4 = 0; |
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129 | |||
130 | /* Determine the address of the SMBus areas */ |
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131 | if (force_addr) { |
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132 | i801_smba = force_addr & 0xfff0; |
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133 | } else { |
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134 | pci_read_config_word(I801_dev, SMBBA, &i801_smba); |
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135 | i801_smba &= 0xfff0; |
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136 | if(i801_smba == 0) { |
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137 | dev_err(&dev->dev, "SMB base address uninitialized" |
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138 | "- upgrade BIOS or use force_addr=0xaddr\n"); |
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139 | return -ENODEV; |
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140 | } |
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141 | } |
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142 | |||
143 | if (!request_region(i801_smba, (isich4 ? 16 : 8), "i801-smbus")) { |
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144 | dev_err(&dev->dev, "I801_smb region 0x%x already in use!\n", |
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145 | i801_smba); |
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146 | error_return = -EBUSY; |
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147 | goto END; |
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148 | } |
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149 | |||
150 | pci_read_config_byte(I801_dev, SMBHSTCFG, &temp); |
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151 | temp &= ~SMBHSTCFG_I2C_EN; /* SMBus timing */ |
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152 | pci_write_config_byte(I801_dev, SMBHSTCFG, temp); |
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153 | |||
154 | /* If force_addr is set, we program the new address here. Just to make |
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155 | sure, we disable the device first. */ |
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156 | if (force_addr) { |
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157 | pci_write_config_byte(I801_dev, SMBHSTCFG, temp & 0xfe); |
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158 | pci_write_config_word(I801_dev, SMBBA, i801_smba); |
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159 | pci_write_config_byte(I801_dev, SMBHSTCFG, temp | 0x01); |
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160 | dev_warn(&dev->dev, "WARNING: I801 SMBus interface set to " |
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161 | "new address %04x!\n", i801_smba); |
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162 | } else if ((temp & 1) == 0) { |
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163 | pci_write_config_byte(I801_dev, SMBHSTCFG, temp | 1); |
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164 | dev_warn(&dev->dev, "enabling SMBus device\n"); |
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165 | } |
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166 | |||
167 | if (temp & 0x02) |
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168 | dev_dbg(&dev->dev, "I801 using Interrupt SMI# for SMBus.\n"); |
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169 | else |
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170 | dev_dbg(&dev->dev, "I801 using PCI Interrupt for SMBus.\n"); |
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171 | |||
172 | pci_read_config_byte(I801_dev, SMBREV, &temp); |
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173 | dev_dbg(&dev->dev, "SMBREV = 0x%X\n", temp); |
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174 | dev_dbg(&dev->dev, "I801_smba = 0x%X\n", i801_smba); |
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175 | |||
176 | END: |
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177 | return error_return; |
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178 | } |
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179 | |||
180 | static int i801_transaction(void) |
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181 | { |
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182 | int temp; |
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183 | int result = 0; |
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184 | int timeout = 0; |
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185 | |||
186 | dev_dbg(&I801_dev->dev, "Transaction (pre): CNT=%02x, CMD=%02x," |
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187 | "ADD=%02x, DAT0=%02x, DAT1=%02x\n", inb_p(SMBHSTCNT), |
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188 | inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), |
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189 | inb_p(SMBHSTDAT1)); |
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190 | |||
191 | /* Make sure the SMBus host is ready to start transmitting */ |
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192 | /* 0x1f = Failed, Bus_Err, Dev_Err, Intr, Host_Busy */ |
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193 | if ((temp = (0x1f & inb_p(SMBHSTSTS))) != 0x00) { |
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194 | dev_dbg(&I801_dev->dev, "SMBus busy (%02x). Resetting... \n", |
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195 | temp); |
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196 | outb_p(temp, SMBHSTSTS); |
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197 | if ((temp = (0x1f & inb_p(SMBHSTSTS))) != 0x00) { |
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198 | dev_dbg(&I801_dev->dev, "Failed! (%02x)\n", temp); |
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199 | return -1; |
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200 | } else { |
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201 | dev_dbg(&I801_dev->dev, "Successfull!\n"); |
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202 | } |
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203 | } |
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204 | |||
205 | outb_p(inb(SMBHSTCNT) | I801_START, SMBHSTCNT); |
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206 | |||
207 | /* We will always wait for a fraction of a second! */ |
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208 | do { |
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209 | i2c_delay(1); |
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210 | temp = inb_p(SMBHSTSTS); |
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211 | } while ((temp & 0x01) && (timeout++ < MAX_TIMEOUT)); |
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212 | |||
213 | /* If the SMBus is still busy, we give up */ |
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214 | if (timeout >= MAX_TIMEOUT) { |
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215 | dev_dbg(&I801_dev->dev, "SMBus Timeout!\n"); |
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216 | result = -1; |
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217 | } |
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218 | |||
219 | if (temp & 0x10) { |
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220 | result = -1; |
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221 | dev_dbg(&I801_dev->dev, "Error: Failed bus transaction\n"); |
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222 | } |
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223 | |||
224 | if (temp & 0x08) { |
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225 | result = -1; |
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226 | dev_err(&I801_dev->dev, "Bus collision! SMBus may be locked " |
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227 | "until next hard reset. (sorry!)\n"); |
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228 | /* Clock stops and slave is stuck in mid-transmission */ |
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229 | } |
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230 | |||
231 | if (temp & 0x04) { |
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232 | result = -1; |
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233 | dev_dbg(&I801_dev->dev, "Error: no response!\n"); |
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234 | } |
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235 | |||
236 | if ((inb_p(SMBHSTSTS) & 0x1f) != 0x00) |
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237 | outb_p(inb(SMBHSTSTS), SMBHSTSTS); |
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238 | |||
239 | if ((temp = (0x1f & inb_p(SMBHSTSTS))) != 0x00) { |
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240 | dev_dbg(&I801_dev->dev, "Failed reset at end of transaction" |
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241 | "(%02x)\n", temp); |
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242 | } |
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243 | dev_dbg(&I801_dev->dev, "Transaction (post): CNT=%02x, CMD=%02x, " |
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244 | "ADD=%02x, DAT0=%02x, DAT1=%02x\n", inb_p(SMBHSTCNT), |
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245 | inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), |
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246 | inb_p(SMBHSTDAT1)); |
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247 | return result; |
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248 | } |
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249 | |||
250 | /* All-inclusive block transaction function */ |
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251 | static int i801_block_transaction(union i2c_smbus_data *data, char read_write, |
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252 | int command) |
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253 | { |
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254 | int i, len; |
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255 | int smbcmd; |
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256 | int temp; |
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257 | int result = 0; |
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258 | int timeout; |
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259 | unsigned char hostc, errmask; |
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260 | |||
261 | if (command == I2C_SMBUS_I2C_BLOCK_DATA) { |
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262 | if (read_write == I2C_SMBUS_WRITE) { |
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263 | /* set I2C_EN bit in configuration register */ |
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264 | pci_read_config_byte(I801_dev, SMBHSTCFG, &hostc); |
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265 | pci_write_config_byte(I801_dev, SMBHSTCFG, |
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266 | hostc | SMBHSTCFG_I2C_EN); |
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267 | } else { |
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268 | dev_err(&I801_dev->dev, |
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269 | "I2C_SMBUS_I2C_BLOCK_READ not DB!\n"); |
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270 | return -1; |
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271 | } |
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272 | } |
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273 | |||
274 | if (read_write == I2C_SMBUS_WRITE) { |
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275 | len = data->block[0]; |
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276 | if (len < 1) |
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277 | len = 1; |
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278 | if (len > 32) |
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279 | len = 32; |
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280 | outb_p(len, SMBHSTDAT0); |
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281 | outb_p(data->block[1], SMBBLKDAT); |
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282 | } else { |
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283 | len = 32; /* max for reads */ |
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284 | } |
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285 | |||
286 | if(isich4 && command != I2C_SMBUS_I2C_BLOCK_DATA) { |
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287 | /* set 32 byte buffer */ |
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288 | } |
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289 | |||
290 | for (i = 1; i <= len; i++) { |
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291 | if (i == len && read_write == I2C_SMBUS_READ) |
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292 | smbcmd = I801_BLOCK_LAST; |
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293 | else |
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294 | smbcmd = I801_BLOCK_DATA; |
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295 | outb_p(smbcmd | ENABLE_INT9, SMBHSTCNT); |
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296 | |||
297 | dev_dbg(&I801_dev->dev, "Block (pre %d): CNT=%02x, CMD=%02x, " |
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298 | "ADD=%02x, DAT0=%02x, BLKDAT=%02x\n", i, |
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299 | inb_p(SMBHSTCNT), inb_p(SMBHSTCMD), inb_p(SMBHSTADD), |
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300 | inb_p(SMBHSTDAT0), inb_p(SMBBLKDAT)); |
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301 | |||
302 | /* Make sure the SMBus host is ready to start transmitting */ |
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303 | temp = inb_p(SMBHSTSTS); |
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304 | if (i == 1) { |
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305 | /* Erronenous conditions before transaction: |
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306 | * Byte_Done, Failed, Bus_Err, Dev_Err, Intr, Host_Busy */ |
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307 | errmask=0x9f; |
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308 | } else { |
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309 | /* Erronenous conditions during transaction: |
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310 | * Failed, Bus_Err, Dev_Err, Intr */ |
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311 | errmask=0x1e; |
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312 | } |
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313 | if (temp & errmask) { |
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314 | dev_dbg(&I801_dev->dev, "SMBus busy (%02x). " |
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315 | "Resetting... \n", temp); |
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316 | outb_p(temp, SMBHSTSTS); |
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317 | if (((temp = inb_p(SMBHSTSTS)) & errmask) != 0x00) { |
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318 | dev_err(&I801_dev->dev, |
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319 | "Reset failed! (%02x)\n", temp); |
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320 | result = -1; |
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321 | goto END; |
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322 | } |
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323 | if (i != 1) { |
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324 | /* if die in middle of block transaction, fail */ |
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325 | result = -1; |
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326 | goto END; |
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327 | } |
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328 | } |
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329 | |||
330 | if (i == 1) |
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331 | outb_p(inb(SMBHSTCNT) | I801_START, SMBHSTCNT); |
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332 | |||
333 | /* We will always wait for a fraction of a second! */ |
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334 | timeout = 0; |
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335 | do { |
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336 | temp = inb_p(SMBHSTSTS); |
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337 | i2c_delay(1); |
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338 | } |
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339 | while ((!(temp & 0x80)) |
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340 | && (timeout++ < MAX_TIMEOUT)); |
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341 | |||
342 | /* If the SMBus is still busy, we give up */ |
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343 | if (timeout >= MAX_TIMEOUT) { |
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344 | result = -1; |
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345 | dev_dbg(&I801_dev->dev, "SMBus Timeout!\n"); |
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346 | } |
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347 | |||
348 | if (temp & 0x10) { |
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349 | result = -1; |
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350 | dev_dbg(&I801_dev->dev, |
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351 | "Error: Failed bus transaction\n"); |
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352 | } else if (temp & 0x08) { |
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353 | result = -1; |
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354 | dev_err(&I801_dev->dev, "Bus collision!\n"); |
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355 | } else if (temp & 0x04) { |
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356 | result = -1; |
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357 | dev_dbg(&I801_dev->dev, "Error: no response!\n"); |
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358 | } |
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359 | |||
360 | if (i == 1 && read_write == I2C_SMBUS_READ) { |
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361 | len = inb_p(SMBHSTDAT0); |
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362 | if (len < 1) |
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363 | len = 1; |
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364 | if (len > 32) |
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365 | len = 32; |
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366 | data->block[0] = len; |
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367 | } |
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368 | |||
369 | /* Retrieve/store value in SMBBLKDAT */ |
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370 | if (read_write == I2C_SMBUS_READ) |
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371 | data->block[i] = inb_p(SMBBLKDAT); |
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372 | if (read_write == I2C_SMBUS_WRITE && i+1 <= len) |
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373 | outb_p(data->block[i+1], SMBBLKDAT); |
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374 | if ((temp & 0x9e) != 0x00) |
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375 | outb_p(temp, SMBHSTSTS); /* signals SMBBLKDAT ready */ |
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376 | |||
377 | if ((temp = (0x1e & inb_p(SMBHSTSTS))) != 0x00) { |
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378 | dev_dbg(&I801_dev->dev, |
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379 | "Bad status (%02x) at end of transaction\n", |
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380 | temp); |
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381 | } |
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382 | dev_dbg(&I801_dev->dev, "Block (post %d): CNT=%02x, CMD=%02x, " |
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383 | "ADD=%02x, DAT0=%02x, BLKDAT=%02x\n", i, |
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384 | inb_p(SMBHSTCNT), inb_p(SMBHSTCMD), inb_p(SMBHSTADD), |
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385 | inb_p(SMBHSTDAT0), inb_p(SMBBLKDAT)); |
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386 | |||
387 | if (result < 0) |
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388 | goto END; |
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389 | } |
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390 | |||
391 | #ifdef HAVE_PEC |
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392 | if(isich4 && command == I2C_SMBUS_BLOCK_DATA_PEC) { |
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393 | /* wait for INTR bit as advised by Intel */ |
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394 | timeout = 0; |
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395 | do { |
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396 | temp = inb_p(SMBHSTSTS); |
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397 | i2c_delay(1); |
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398 | } while ((!(temp & 0x02)) |
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399 | && (timeout++ < MAX_TIMEOUT)); |
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400 | |||
401 | if (timeout >= MAX_TIMEOUT) { |
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402 | dev_dbg(&I801_dev->dev, "PEC Timeout!\n"); |
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403 | } |
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404 | outb_p(temp, SMBHSTSTS); |
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405 | } |
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406 | #endif |
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407 | result = 0; |
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408 | END: |
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409 | if (command == I2C_SMBUS_I2C_BLOCK_DATA) { |
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410 | /* restore saved configuration register value */ |
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411 | pci_write_config_byte(I801_dev, SMBHSTCFG, hostc); |
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412 | } |
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413 | return result; |
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414 | } |
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415 | |||
416 | /* Return -1 on error. */ |
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417 | static s32 i801_access(struct i2c_adapter * adap, u16 addr, |
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418 | unsigned short flags, char read_write, u8 command, |
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419 | int size, union i2c_smbus_data * data) |
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420 | { |
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421 | int hwpec = 0; |
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422 | int block = 0; |
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423 | int ret, xact = 0; |
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424 | |||
425 | #ifdef HAVE_PEC |
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426 | if(isich4) |
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427 | hwpec = (flags & I2C_CLIENT_PEC) != 0; |
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428 | #endif |
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429 | |||
430 | switch (size) { |
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431 | case I2C_SMBUS_QUICK: |
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432 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
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433 | SMBHSTADD); |
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434 | xact = I801_QUICK; |
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435 | break; |
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436 | case I2C_SMBUS_BYTE: |
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437 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
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438 | SMBHSTADD); |
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439 | if (read_write == I2C_SMBUS_WRITE) |
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440 | outb_p(command, SMBHSTCMD); |
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441 | xact = I801_BYTE; |
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442 | break; |
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443 | case I2C_SMBUS_BYTE_DATA: |
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444 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
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445 | SMBHSTADD); |
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446 | outb_p(command, SMBHSTCMD); |
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447 | if (read_write == I2C_SMBUS_WRITE) |
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448 | outb_p(data->byte, SMBHSTDAT0); |
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449 | xact = I801_BYTE_DATA; |
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450 | break; |
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451 | case I2C_SMBUS_WORD_DATA: |
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452 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
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453 | SMBHSTADD); |
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454 | outb_p(command, SMBHSTCMD); |
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455 | if (read_write == I2C_SMBUS_WRITE) { |
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456 | outb_p(data->word & 0xff, SMBHSTDAT0); |
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457 | outb_p((data->word & 0xff00) >> 8, SMBHSTDAT1); |
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458 | } |
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459 | xact = I801_WORD_DATA; |
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460 | break; |
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461 | case I2C_SMBUS_BLOCK_DATA: |
||
462 | case I2C_SMBUS_I2C_BLOCK_DATA: |
||
463 | #ifdef HAVE_PEC |
||
464 | case I2C_SMBUS_BLOCK_DATA_PEC: |
||
465 | if(hwpec && size == I2C_SMBUS_BLOCK_DATA) |
||
466 | size = I2C_SMBUS_BLOCK_DATA_PEC; |
||
467 | #endif |
||
468 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
||
469 | SMBHSTADD); |
||
470 | outb_p(command, SMBHSTCMD); |
||
471 | block = 1; |
||
472 | break; |
||
473 | case I2C_SMBUS_PROC_CALL: |
||
474 | default: |
||
475 | dev_err(&I801_dev->dev, "Unsupported transaction %d\n", size); |
||
476 | return -1; |
||
477 | } |
||
478 | |||
479 | #ifdef HAVE_PEC |
||
480 | if(isich4 && hwpec) { |
||
481 | if(size != I2C_SMBUS_QUICK && |
||
482 | size != I2C_SMBUS_I2C_BLOCK_DATA) |
||
483 | outb_p(1, SMBAUXCTL); /* enable HW PEC */ |
||
484 | } |
||
485 | #endif |
||
486 | if(block) |
||
487 | ret = i801_block_transaction(data, read_write, size); |
||
488 | else { |
||
489 | outb_p(xact | ENABLE_INT9, SMBHSTCNT); |
||
490 | ret = i801_transaction(); |
||
491 | } |
||
492 | |||
493 | #ifdef HAVE_PEC |
||
494 | if(isich4 && hwpec) { |
||
495 | if(size != I2C_SMBUS_QUICK && |
||
496 | size != I2C_SMBUS_I2C_BLOCK_DATA) |
||
497 | outb_p(0, SMBAUXCTL); |
||
498 | } |
||
499 | #endif |
||
500 | |||
501 | if(block) |
||
502 | return ret; |
||
503 | if(ret) |
||
504 | return -1; |
||
505 | if ((read_write == I2C_SMBUS_WRITE) || (xact == I801_QUICK)) |
||
506 | return 0; |
||
507 | |||
508 | switch (xact & 0x7f) { |
||
509 | case I801_BYTE: /* Result put in SMBHSTDAT0 */ |
||
510 | case I801_BYTE_DATA: |
||
511 | data->byte = inb_p(SMBHSTDAT0); |
||
512 | break; |
||
513 | case I801_WORD_DATA: |
||
514 | data->word = inb_p(SMBHSTDAT0) + (inb_p(SMBHSTDAT1) << 8); |
||
515 | break; |
||
516 | } |
||
517 | return 0; |
||
518 | } |
||
519 | |||
520 | |||
521 | static u32 i801_func(struct i2c_adapter *adapter) |
||
522 | { |
||
523 | return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | |
||
524 | I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | |
||
525 | I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK |
||
526 | #ifdef HAVE_PEC |
||
527 | | (isich4 ? I2C_FUNC_SMBUS_BLOCK_DATA_PEC | |
||
528 | I2C_FUNC_SMBUS_HWPEC_CALC |
||
529 | : 0) |
||
530 | #endif |
||
531 | ; |
||
532 | } |
||
533 | |||
534 | static struct i2c_algorithm smbus_algorithm = { |
||
535 | .name = "Non-I2C SMBus adapter", |
||
536 | .id = I2C_ALGO_SMBUS, |
||
537 | .smbus_xfer = i801_access, |
||
538 | .functionality = i801_func, |
||
539 | }; |
||
540 | |||
541 | static struct i2c_adapter i801_adapter = { |
||
542 | .owner = THIS_MODULE, |
||
543 | .class = I2C_ADAP_CLASS_SMBUS, |
||
544 | .algo = &smbus_algorithm, |
||
545 | .name = "unset", |
||
546 | }; |
||
547 | |||
548 | static struct pci_device_id i801_ids[] = { |
||
549 | { |
||
550 | .vendor = PCI_VENDOR_ID_INTEL, |
||
551 | .device = PCI_DEVICE_ID_INTEL_82801AA_3, |
||
552 | .subvendor = PCI_ANY_ID, |
||
553 | .subdevice = PCI_ANY_ID, |
||
554 | }, |
||
555 | { |
||
556 | .vendor = PCI_VENDOR_ID_INTEL, |
||
557 | .device = PCI_DEVICE_ID_INTEL_82801AB_3, |
||
558 | .subvendor = PCI_ANY_ID, |
||
559 | .subdevice = PCI_ANY_ID, |
||
560 | }, |
||
561 | { |
||
562 | .vendor = PCI_VENDOR_ID_INTEL, |
||
563 | .device = PCI_DEVICE_ID_INTEL_82801BA_2, |
||
564 | .subvendor = PCI_ANY_ID, |
||
565 | .subdevice = PCI_ANY_ID, |
||
566 | }, |
||
567 | { |
||
568 | .vendor = PCI_VENDOR_ID_INTEL, |
||
569 | .device = PCI_DEVICE_ID_INTEL_82801CA_3, |
||
570 | .subvendor = PCI_ANY_ID, |
||
571 | .subdevice = PCI_ANY_ID, |
||
572 | }, |
||
573 | { |
||
574 | .vendor = PCI_VENDOR_ID_INTEL, |
||
575 | .device = PCI_DEVICE_ID_INTEL_82801DB_3, |
||
576 | .subvendor = PCI_ANY_ID, |
||
577 | .subdevice = PCI_ANY_ID, |
||
578 | }, |
||
579 | { |
||
580 | .vendor = PCI_VENDOR_ID_INTEL, |
||
581 | .device = PCI_DEVICE_ID_INTEL_82801EB_3, |
||
582 | .subvendor = PCI_ANY_ID, |
||
583 | .subdevice = PCI_ANY_ID, |
||
584 | }, |
||
585 | { 0, } |
||
586 | }; |
||
587 | |||
588 | static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id *id) |
||
589 | { |
||
590 | |||
591 | if (i801_setup(dev)) { |
||
592 | dev_warn(&dev->dev, |
||
593 | "I801 not detected, module not inserted.\n"); |
||
594 | return -ENODEV; |
||
595 | } |
||
596 | |||
597 | /* set up the driverfs linkage to our parent device */ |
||
598 | i801_adapter.dev.parent = &dev->dev; |
||
599 | |||
600 | snprintf(i801_adapter.name, I2C_NAME_SIZE, |
||
601 | "SMBus I801 adapter at %04x", i801_smba); |
||
602 | return i2c_add_adapter(&i801_adapter); |
||
603 | } |
||
604 | |||
605 | static void __devexit i801_remove(struct pci_dev *dev) |
||
606 | { |
||
607 | i2c_del_adapter(&i801_adapter); |
||
608 | } |
||
609 | |||
610 | static struct pci_driver i801_driver = { |
||
611 | .name = "i801 smbus", |
||
612 | .id_table = i801_ids, |
||
613 | .probe = i801_probe, |
||
614 | .remove = __devexit_p(i801_remove), |
||
615 | }; |
||
616 | |||
617 | static int __init i2c_i801_init(void) |
||
618 | { |
||
619 | return pci_module_init(&i801_driver); |
||
620 | } |
||
621 | |||
622 | static void __exit i2c_i801_exit(void) |
||
623 | { |
||
624 | pci_unregister_driver(&i801_driver); |
||
625 | release_region(i801_smba, (isich4 ? 16 : 8)); |
||
626 | } |
||
627 | |||
628 | MODULE_AUTHOR ("Frodo Looijaard <frodol@dds.nl>, " |
||
629 | "Philip Edelbrock <phil@netroedge.com>, " |
||
630 | "and Mark D. Studebaker <mdsxyz123@yahoo.com>"); |
||
631 | MODULE_DESCRIPTION("I801 SMBus driver"); |
||
632 | MODULE_LICENSE("GPL"); |
||
633 | |||
634 | module_init(i2c_i801_init); |
||
635 | module_exit(i2c_i801_exit); |